Biological Bases of Human Social Behaviour

activity adult aggressive behaviour animals appear approach associated attack baboons becomes behave birds changes chimpanzees closely communication comparable complex concerned consequences consider considerable context correlated course depends described determined differences directed discussed display dominance early effects elicited environment evidence example experience extent fact factors females fighting FIGURE frequency given grooming human important increase indicate individuals infant influence initially instance interactions involved isolation later learning less limited macaques males maternal mean measures monkeys mother mounting move movements nature normal objects observed occur parents particular patterns period play positive possible present primates probably produce proximity range rank reared referred relationships relative responses rhesus monkeys role seems seen selection separation sexual shown signals similar situation social sometimes species stimuli structure subsequent suggested tend tion troop types usually various young